Question

what is opera explain

Answer 1

it's a search engine .
and in music industry
it is a form of singing in which the singer sings in a melodies way

Answer 2

Your answer :

Opera is a Web browser that provides some advantages over other browsers from Mozilla or Microsoft. Much smaller in size, Opera is known for being fast and stable. Opera is available for a number of operating systems, including BeOS, Symbian OS, Linux, Mac OS, OS/2, Solaris, and Windows.
Opera began in 1994 as a research project for the national phone company in Norway, Telenor. It is now on its 9th version. Opera is free for download to all supported platforms. Opera is the browser for Nintendo's Wii gaming console.

Hope this helps.

Have a nice day =)